arduino-twitter(without ethernet shield)

I got this code on the internet for processing

/*
Sketch to fast and easy get processing Twittering. Both sending and recieving

Created by David Sjunnesson 1scale1.com
3 September 2009
more info: http://code.google.com/p/sjunnesson/

*/

import java.util.List ;
java.util.List statuses =null;
Twitter twitter;
TwitterResponse twitterRes;
String username = "vishalapr"; // add your own here
String password = "batchu12345"; // add your own here

void setup(){
  twitter = new Twitter(username,password);
  twitterRes=new TwitterResponse();
}

void draw(){
  //getAllUpdates();
  //updateStatus("Hello Twitter, processing here!");
  //getlatestUpdate();
  //getFriendsID();
  //getFriendsStatus(0);
  //updates the Twitter account with the input String
}
void  updateStatus(String statusString){
  println("Testing arduino-twitter: "+statusString);
  try{
    Status status1 = twitter.updateStatus(statusString);
  }
  catch( TwitterException e)  {
    println(e.getStatusCode());
  }
}

and when I click run it opens a small window but does not post my twitter update...Please tell me how to solve this problem.

And the arduino thing forget about it right now as I first want to send tweets to twitter with processing first then I will add the arduino in...
Thanks